Tips & tricks

A Bitcoin generally can only be spent by its owner as identified through their public key hash, e.g., their Bitcoin address. The Bitcoin protocol...

In part 1 of our zero-knowledge proof series, we explained how a zero-knowledge proof could work when the verifier and the prover interact with...

Despite being the most hermetic country on Earth, North Korea is certainly no stranger to cyberspace—in both its uses and abuses. Despite a tiny...

***ExpressVPN's 2017 Cyber Monday deal is over, but you can still get 35% off a one year subscription!*** Black Friday is back, which means it’s...

Zero-knowledge proofs explained Part 2: Non-interactive zero-knowledge proofs Cryptography mostly concerns itself with secure communications and includes hiding information from adversaries and authentication of individuals. Hashes,...

Our devices, as convenient as they may be, are getting creepily good at collecting data. Phones, cars, and even carpets are packed full of...

Bruce Schneier is a world-renowned cryptographer and security technologist whom the Economist has dubbed an “internet-security guru.” Schneier has authored a dozen books since...

With the value of cryptocurrencies skyrocketing into the $100 billion range, it’s easy to get infected by the biggest “digital gold rush” since the...

** This is part three of ExpressVPN's whistleblowing guide. ** Part 1: Whistleblowing guide: Blowing the whistle is tough Part 2: Whistleblowing guide: How to stay...

Not only has Bitcoin’s value gone up over the past year, but the available options for Bitcoin storage have also increased. The choice can...